<template>
    <div class="login_container">
        <!-- 登录盒子  -->
        <div class="login_box">
            <!-- 头像 -->
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>
            <!-- 登录表单 -->
            <el-form :model="loginForm" ref="LoginFormRef" :rules="loginFormRules" label-width="0px" class="login_form">
                <!-- 用户名 -->
                <el-form-item prop="username">
                    <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
                </el-form-item>
                <!-- 密码 -->
                <el-form-item prop="password">
                    <el-input type="password" v-model="loginForm.password"
                              prefix-icon="iconfont icon-3702mima"></el-input>
                </el-form-item>
                <!-- 按钮 -->
                <el-form-item class="btns">
                    <el-button type="primary" @click="login">登录</el-button>
                    <el-button type="info" @click="resetLoginForm">重置</el-button>
                </el-form-item>
            </el-form>
        </div>
    </div>
</template>

<script>

    export default {
        name: 'Home',
        data(){
            return {
                //数据绑定
                loginForm: {
                    username: 'admin',
                    password: '123456'
                },
                //表单验证规则
                loginFormRules: {
                    username: [
                        {required: true, message: '请输入登录名', trigger: 'blur'},
                        {
                            min: 3,
                            max: 10,
                            message: '登录名长度在 3 到 10 个字符',
                            trigger: 'blur'  //trigger 扳机
                        }
                    ],
                    password: [
                        {required: true, message: '请输入密码', trigger: 'blur'},
                        {
                            min: 6,
                            max: 15,
                            message: '密码长度在 6 到 15 个字符',
                            trigger: 'blur'
                        }
                    ]
                }
            }
        },
        methods:{
            login(){
                //点击登录的时候先调用validate方法验证表单内容是否有误
                this.$refs.LoginFormRef.validate(async valid => {
                    console.log(this.loginFormRules);
                    //如果valid参数为true则验证通过
                    if (!valid) {
                        return
                    }

                    //发送请求进行登录  //别名
                    const {data: res} = await this.$http.post('login', this.loginForm);
                    if (res.meta.status !== 200) {
                        return this.$message.error('登录失败:' + res.meta.msg) //console.log("登录失败:"+res.meta.msg)
                    }

                    this.$message.success('登录成功');
                    //保存token
                    window.sessionStorage.setItem('token', res.data.token);
                    // 导航至/home
                    this.$router.push('/home')
                })
            },
            resetLoginForm(){
                //this=>当前组件对象，其中的属性$refs包含了设置的表单ref
                //   console.log(this)
                this.$refs.LoginFormRef.resetFields()
            },
        }
    }
</script>
<style lang="scss" type="text/scss" scoped>
    .login_container {
        background-color: #2b5b6b;
        height: 100%;
    }

    .login_box {
        width: 450px;
        height: 300px;
        background: #fff;
        border-radius: 3px;
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
        .avatar_box {
            height: 130px;
            width: 130px;
            border: 1px solid #eee;
            border-radius: 50%;
            padding: 10px;
            box-shadow: 0 0 10px #ddd;
            position: absolute;
            left: 50%;
            transform: translate(-50%, -50%);
            background-color: #fff;
            img {
                width: 100%;
                height: 100%;
                border-radius: 50%;
                background-color: #eee;
            }
        }
    }

    .login_form {
        position: absolute;
        bottom: 0;
        width: 100%;
        padding: 0 20px;
        box-sizing: border-box;
    }

    .btns {
        display: flex;
        justify-content: flex-end;
    }
</style>
